A flexible iterator for transforming anIterator[A] into anIterator[Seq[A]], with configurable sequence size, step, and strategy for dealing with remainder elements which don't fit evenly into the last group.

AGroupedIterator is yielded bygrouped and bysliding, where thestep may differ from the groupsize.

Attributes

Inherited from:: Iterator
Source: Iterator.scala
Supertypes: classAbstractIterator[Seq[B]]
traitIterator[Seq[B]]
traitIterableOnceOps[Seq[B],Iterator,Iterator[Seq[B]]]
traitIterableOnce[Seq[B]]
classObject
traitMatchable
classAny
Show all

Value members

Concrete methods

defch:Char

Attributes

Source: Source.scala

defclose():Unit

The close() method closes the underlying resource.

Attributes

Source: Source.scala

defgetLines():Iterator[String]

Returns an iterator who returns lines (NOT including newline character(s)).

Returns an iterator who returns lines (NOT including newline character(s)). It will treat any of \r\n, \r, or \n as a line separator (longest match) - if you need more refined behavior you can subclass Source#LineIterator directly.

Attributes

Source: Source.scala

defhasNext:Boolean

Returnstrue if this source has more characters.

Attributes

Source: Source.scala

defnext():Char

Returns next character.

Attributes

Source: Source.scala

defpos:Int

Attributes

Source: Source.scala

defreport(pos:Int,msg:String,out:PrintStream):Unit

Value parameters

msg: the error message to report
out: PrintStream to use
pos: the source position (line/column)

Attributes

Source: Source.scala

defreportError(pos:Int,msg:String,out:PrintStream = ...):Unit

Reports an error message to the output streamout.

Value parameters

msg: the error message to report
out: PrintStream to use (optional: defaults toConsole.err)
pos: the source position (line/column)

Attributes

Source: Source.scala

defreportWarning(pos:Int,msg:String,out:PrintStream = ...):Unit

Value parameters

msg: the warning message to report
out: PrintStream to use (optional: defaults toConsole.out)
pos: the source position (line/column)

Attributes

Source: Source.scala

defreset():Source

The reset() method creates a fresh copy of this Source.

Attributes

Source: Source.scala

defwithClose(f: ()=>Unit):this.type

Attributes

Source: Source.scala

defwithDescription(text:String):this.type

Attributes

Source: Source.scala

defwithPositioning(on:Boolean):this.type

Change or disable the positioner.

Attributes

Source: Source.scala

defwithPositioning(pos:Positioner):this.type

Attributes

Source: Source.scala

defwithReset(f: ()=>Source):this.type

Attributes

Source: Source.scala

Inherited methods

finaldef++[B >:Char](xs:=>IterableOnce[B]):Iterator[B]

Attributes

Inherited from:: Iterator
Source: Iterator.scala

finaldefaddString(b:StringBuilder): b.type

Appends all elements of this collection to a string builder.

Appends all elements of this collection to a string builder. The written text consists of the string representations (w.r.t. the methodtoString) of all elements of this collection without any separator string.

Example:

scala> val a = List(1,2,3,4)a: List[Int] = List(1, 2, 3, 4)scala> val b = new StringBuilder()b: StringBuilder =scala> val h = a.addString(b)h: StringBuilder = 1234

Value parameters

b: the string builder to which elements are appended.

Attributes

Returns: the string builderb to which elements were appended.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

finaldefaddString(b:StringBuilder,sep:String): b.type

Appends all elements of this collection to a string builder using a separator string.

Appends all elements of this collection to a string builder using a separator string. The written text consists of the string representations (w.r.t. the methodtoString) of all elements of this collection, separated by the stringsep.

Example:

scala> val a = List(1,2,3,4)a: List[Int] = List(1, 2, 3, 4)scala> val b = new StringBuilder()b: StringBuilder =scala> a.addString(b, ", ")res0: StringBuilder = 1, 2, 3, 4

Value parameters

b: the string builder to which elements are appended.
sep: the separator string.

Attributes

Returns: the string builderb to which elements were appended.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defaddString(b:StringBuilder,start:String,sep:String,end:String): b.type

Appends all elements of this collection to a string builder using start, end, and separator strings.

Appends all elements of this collection to a string builder using start, end, and separator strings. The written text begins with the stringstart and ends with the stringend. Inside, the string representations (w.r.t. the methodtoString) of all elements of this collection are separated by the stringsep.

Example:

scala> val a = List(1,2,3,4)a: List[Int] = List(1, 2, 3, 4)scala> val b = new StringBuilder()b: StringBuilder =scala> a.addString(b , "List(" , ", " , ")")res5: StringBuilder = List(1, 2, 3, 4)

Value parameters

b: the string builder to which elements are appended.
end: the ending string.
sep: the separator string.
start: the starting string.

Attributes

Returns: the string builderb to which elements were appended.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defbuffered:BufferedIterator[Char]

Creates a buffered iterator from this iterator.

Attributes

Returns: a buffered iterator producing the same values as this iterator.
See also: scala.collection.BufferedIterator
Note: Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
Inherited from:: Iterator
Source: Iterator.scala

defcollect[B](pf:PartialFunction[Char,B]):Iterator[B]

Builds a new iterator by applying a partial function to all elements of this iterator on which the function is defined.

Type parameters

B: the element type of the returned iterator.

Value parameters

pf: the partial function which filters and maps the iterator.

Attributes

Returns: a new iterator resulting from applying the given partial functionpf to each element on which it is defined and collecting the results. The order of the elements is preserved.
Inherited from:: Iterator
Source: Iterator.scala

defcollectFirst[B](pf:PartialFunction[Char,B]):Option[B]

Finds the first element of the collection for which the given partial function is defined, and applies the partial function to it.

Note: may not terminate for infinite-sized collections.

Note: might return different results for different runs, unless the underlying collection type is ordered.

Value parameters

pf: the partial function

Attributes

Returns: an option value containing pf applied to the first value for which it is defined, orNone if none exists.
Example: Seq("a", 1, 5L).collectFirst({ case x: Int => x*10 }) = Some(10)
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defconcat[B >:Char](xs:=>IterableOnce[B]):Iterator[B]

Attributes

Inherited from:: Iterator
Source: Iterator.scala

defcontains(elem:Any):Boolean

Tests whether this iterator contains a given value as an element.

Note: may not terminate for infinite iterators.

Value parameters

elem: the element to test.

Attributes

Returns: true if this iterator produces some value that is is equal (as determined by==) toelem,false otherwise.
Note: Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
Inherited from:: Iterator
Source: Iterator.scala

defcopyToArray[B >:Char](xs:Array[B],start:Int,len:Int):Int

Copy elements to an array, returning the number of elements written.

Fills the given arrayxs starting at indexstart with at mostlen elements of this collection.

Copying will stop once either all the elements of this collection have been copied, or the end of the array is reached, orlen elements have been copied.

Type parameters

B: the type of the elements of the array.

Value parameters

len: the maximal number of elements to copy.
start: the starting index of xs.
xs: the array to fill.

Attributes

Returns: the number of elements written to the array
Note: Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defcopyToArray[B >:Char](xs:Array[B],start:Int):Int

Copies elements to an array, returning the number of elements written.

Fills the given arrayxs starting at indexstart with values of this collection.

Copying will stop once either all the elements of this collection have been copied, or the end of the array is reached.

Type parameters

B: the type of the elements of the array.

Value parameters

start: the starting index of xs.
xs: the array to fill.

Attributes

Returns: the number of elements written to the array
Note: Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defcopyToArray[B >:Char](xs:Array[B]):Int

Copies elements to an array, returning the number of elements written.

Fills the given arrayxs starting at indexstart with values of this collection.

Copying will stop once either all the elements of this collection have been copied, or the end of the array is reached.

Type parameters

B: the type of the elements of the array.

Value parameters

xs: the array to fill.

Attributes

Returns: the number of elements written to the array
Note: Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defcorresponds[B](that:IterableOnce[B])(p: (Char,B)=>Boolean):Boolean

Tests whether every element of this collection's iterator relates to the corresponding element of another collection by satisfying a test predicate.

Note: will not terminate for infinite-sized collections.

Type parameters

B: the type of the elements ofthat

Value parameters

p: the test predicate, which relates elements from both collections
that: the other collection

Attributes

Returns: true if both collections have the same length andp(x, y) istrue for all corresponding elementsx of this iterator andy ofthat, otherwisefalse
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defcount(p:Char=>Boolean):Int

Counts the number of elements in the collection which satisfy a predicate.

Note: will not terminate for infinite-sized collections.

Value parameters

p: the predicate used to test elements.

Attributes

Returns: the number of elements satisfying the predicatep.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defdistinct:Iterator[Char]

Builds a new iterator from this one without any duplicated elements on it.

Attributes

Returns: iterator with distinct elements
Note: Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
Inherited from:: Iterator
Source: Iterator.scala

defdistinctBy[B](f:Char=>B):Iterator[Char]

Builds a new iterator from this one without any duplicated elements as determined by== after applying the transforming functionf.

Type parameters

B: the type of the elements after being transformed byf

Value parameters

f: The transforming function whose result is used to determine the uniqueness of each element

Attributes

Returns: iterator with distinct elements
Note: Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
Inherited from:: Iterator
Source: Iterator.scala

defdrop(n:Int):Iterator[Char]

Selects all elements except the firstn ones.

Note: might return different results for different runs, unless the underlying collection type is ordered.

Value parameters

n: the number of elements to drop from this iterator.

Attributes

Returns: a iterator consisting of all elements of this iterator except the firstn ones, or else the empty iterator, if this iterator has less thann elements. Ifn is negative, don't drop any elements.
Inherited from:: Iterator
Source: Iterator.scala

defdropWhile(p:Char=>Boolean):Iterator[Char]

Selects all elements except the longest prefix that satisfies a predicate.

The matching prefix starts with the first element of this iterator, and the element following the prefix is the first element that does not satisfy the predicate. The matching prefix may be empty, so that this method returns the entire iterator.

Example:

scala> List(1, 2, 3, 100, 4).dropWhile(n => n < 10)val res0: List[Int] = List(100, 4)scala> List(1, 2, 3, 100, 4).dropWhile(n => n == 0)val res1: List[Int] = List(1, 2, 3, 100, 4)

Usespan to obtain both the prefix and suffix. UsefilterNot to drop all elements that satisfy the predicate.

Note: might return different results for different runs, unless the underlying collection type is ordered.

Value parameters

p: The predicate used to test elements.

Attributes

Returns: the longest suffix of this iterator whose first element does not satisfy the predicatep.
Inherited from:: Iterator
Source: Iterator.scala

defduplicate: (Iterator[Char],Iterator[Char])

Creates two new iterators that both iterate over the same elements as this iterator (in the same order).

Creates two new iterators that both iterate over the same elements as this iterator (in the same order). The duplicate iterators are considered equal if they are positioned at the same element.

Given that most methods on iterators will make the original iterator unfit for further use, this methods provides a reliable way of calling multiple such methods on an iterator.

Attributes

Returns: a pair of iterators
Note: The implementation may allocate temporary storage for elements iterated by one iterator but not yet by the other.
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterators that were returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterators as well.
Inherited from:: Iterator
Source: Iterator.scala

defexists(p:Char=>Boolean):Boolean

Tests whether a predicate holds for at least one element of this collection.

Note: may not terminate for infinite-sized collections.

Value parameters

p: the predicate used to test elements.

Attributes

Returns: true if the given predicatep is satisfied by at least one element of this collection, otherwisefalse
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

deffilter(p:Char=>Boolean):Iterator[Char]

Selects all elements of this iterator which satisfy a predicate.

Value parameters

p: the predicate used to test elements.

Attributes

Returns: a new iterator consisting of all elements of this iterator that satisfy the given predicatep. The order of the elements is preserved.
Inherited from:: Iterator
Source: Iterator.scala

deffilterNot(p:Char=>Boolean):Iterator[Char]

Selects all elements of this iterator which do not satisfy a predicate.

Value parameters

pred: the predicate used to test elements.

Attributes

Returns: a new iterator consisting of all elements of this iterator that do not satisfy the given predicatepred. Their order may not be preserved.
Inherited from:: Iterator
Source: Iterator.scala

deffind(p:Char=>Boolean):Option[Char]

Finds the first element of the collection satisfying a predicate, if any.

Note: may not terminate for infinite-sized collections.

Note: might return different results for different runs, unless the underlying collection type is ordered.

Value parameters

p: the predicate used to test elements.

Attributes

Returns: an option value containing the first element in the collection that satisfiesp, orNone if none exists.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defflatMap[B](f:Char=>IterableOnce[B]):Iterator[B]

Builds a new iterator by applying a function to all elements of this iterator and using the elements of the resulting collections.

For example:

def getWords(lines: Seq[String]): Seq[String] = lines flatMap (line => line split "\\W+")

The type of the resulting collection is guided by the static type of iterator. This might cause unexpected results sometimes. For example:

// lettersOf will return a Seq[Char] of likely repeated letters, instead of a Setdef lettersOf(words: Seq[String]) = words flatMap (word => word.toSet)// lettersOf will return a Set[Char], not a Seqdef lettersOf(words: Seq[String]) = words.toSet flatMap ((word: String) => word.toSeq)// xs will be an Iterable[Int]val xs = Map("a" -> List(11,111), "b" -> List(22,222)).flatMap(_._2)// ys will be a Map[Int, Int]val ys = Map("a" -> List(1 -> 11,1 -> 111), "b" -> List(2 -> 22,2 -> 222)).flatMap(_._2)

Type parameters

B: the element type of the returned collection.

Value parameters

f: the function to apply to each element.

Attributes

Returns: a new iterator resulting from applying the given collection-valued functionf to each element of this iterator and concatenating the results.
Inherited from:: Iterator
Source: Iterator.scala

defflatten[B](implicitev:Char=>IterableOnce[B]):Iterator[B]

Converts this iterator of iterable collections into a iterator formed by the elements of these iterable collections.

The resulting collection's type will be guided by the type of iterator. For example:

val xs = List(           Set(1, 2, 3),           Set(1, 2, 3)         ).flatten// xs == List(1, 2, 3, 1, 2, 3)val ys = Set(           List(1, 2, 3),           List(3, 2, 1)         ).flatten// ys == Set(1, 2, 3)

Type parameters

B: the type of the elements of each iterable collection.

Value parameters

asIterable: an implicit conversion which asserts that the element type of this iterator is anIterable.

Attributes

Returns: a new iterator resulting from concatenating all element iterators.
Inherited from:: Iterator
Source: Iterator.scala

deffold[A1 >:Char](z:A1)(op: (A1,A1)=>A1):A1

Applies the given binary operatorop to the given initial valuez and all elements of this collection.

For each application of the operator, each operand is either an element of this collection, the initial value, or another such application of the operator.

The order of applications of the operator is unspecified and may be nondeterministic. Each element appears exactly once in the computation. The initial value may be used an arbitrary number of times, but at least once.

If this collection is ordered, then for any application of the operator, the element(s) appearing in the left operand will precede those in the right.

Note: might return different results for different runs, unless either of the following conditions is met: (1) the operator is associative, and the underlying collection type is ordered; or (2) the operator is associative and commutative. In either case, it is also necessary that the initial value be a neutral value for the operator, e.g.Nil forList concatenation or1 for multiplication.

The default implementation inIterableOnce is equivalent tofoldLeft but may be overridden for more efficient traversal orders.

Note: will not terminate for infinite-sized collections.

Type parameters

A1: The type parameter for the binary operator, a supertype ofA.

Value parameters

op: A binary operator; must be associative for the result to always be the same across runs.
z: An initial value; may be used an arbitrary number of times in the computation of the result; must be a neutral value forop for the result to always be the same across runs.

Attributes

Returns: The result of applyingop between all the elements andz, orz if this collection is empty.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

deffoldLeft[B](z:B)(op: (B,Char)=>B):B

Applies the given binary operatorop to the given initial valuez and all elements of this collection, going left to right.

Applies the given binary operatorop to the given initial valuez and all elements of this collection, going left to right. Returns the initial value if this collection is empty.

"Going left to right" only makes sense if this collection is ordered: then ifx1,x2, ...,xn are the elements of this collection, the result isop( op( ... op( op(z, x1), x2) ... ), xn).

If this collection is not ordered, then for each application of the operator, each right operand is an element. In addition, the leftmost operand is the initial value, and each other left operand is itself an application of the operator. The elements of this collection and the initial value all appear exactly once in the computation.

Note: might return different results for different runs, unless the underlying collection type is ordered.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The result type of the binary operator.

Value parameters

op: A binary operator.
z: An initial value.

Attributes

Returns: The result of applyingop toz and all elements of this collection, going left to right. Returnsz if this collection is empty.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

deffoldRight[B](z:B)(op: (Char,B)=>B):B

Applies the given binary operatorop to all elements of this collection and the given initial valuez, going right to left.

Applies the given binary operatorop to all elements of this collection and the given initial valuez, going right to left. Returns the initial value if this collection is empty.

"Going right to left" only makes sense if this collection is ordered: then ifx1,x2, ...,xn are the elements of this collection, the result isop(x1, op(x2, op( ... op(xn, z) ... ))).

If this collection is not ordered, then for each application of the operator, each left operand is an element. In addition, the rightmost operand is the initial value, and each other right operand is itself an application of the operator. The elements of this collection and the initial value all appear exactly once in the computation.

Note: might return different results for different runs, unless the underlying collection type is ordered.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The result type of the binary operator.

Value parameters

op: A binary operator.
z: An initial value.

Attributes

Returns: The result of applyingop to all elements of this collection andz, going right to left. Returnsz if this collection is empty.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defforall(p:Char=>Boolean):Boolean

Tests whether a predicate holds for all elements of this collection.

Note: may not terminate for infinite-sized collections.

Value parameters

p: the predicate used to test elements.

Attributes

Returns: true if this collection is empty or the given predicatep holds for all elements of this collection, otherwisefalse.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defforeach[U](f:Char=>U):Unit

Appliesf to each element for its side effects.

Appliesf to each element for its side effects. Note:U parameter needed to help scalac's type inference.

Attributes

Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defgrouped[B >:Char](size:Int):GroupedIterator[B]

Returns an iterator which groups this iterator into fixed size blocks.

Returns an iterator which groups this iterator into fixed size blocks. Example usages:

// Returns List(List(1, 2, 3), List(4, 5, 6), List(7)))(1 to 7).iterator.grouped(3).toList// Returns List(List(1, 2, 3), List(4, 5, 6))(1 to 7).iterator.grouped(3).withPartial(false).toList// Returns List(List(1, 2, 3), List(4, 5, 6), List(7, 20, 25)// Illustrating that withPadding's argument is by-name.val it2 = Iterator.iterate(20)(_ + 5)(1 to 7).iterator.grouped(3).withPadding(it2.next).toList

Attributes

Note: Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
Inherited from:: Iterator
Source: Iterator.scala

defindexOf[B >:Char](elem:B,from:Int):Int

Returns the index of the first occurrence of the specified object in this iterable object after or at some start index.

Note: may not terminate for infinite iterators.

Value parameters

elem: element to search for.
from: the start index

Attributes

Returns: the index>= from of the first occurrence ofelem in the values produced by this iterator, or -1 if such an element does not exist until the end of the iterator is reached.
Note: Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
Inherited from:: Iterator
Source: Iterator.scala

defindexOf[B >:Char](elem:B):Int

Returns the index of the first occurrence of the specified object in this iterable object.

Note: may not terminate for infinite iterators.

Value parameters

elem: element to search for.

Attributes

Returns: the index of the first occurrence ofelem in the values produced by this iterator, or -1 if such an element does not exist until the end of the iterator is reached.
Note: Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.
Inherited from:: Iterator
Source: Iterator.scala

defindexWhere(p:Char=>Boolean,from:Int = ...):Int

Attributes

Inherited from:: Iterator
Source: Iterator.scala

overridedefisEmpty:Boolean

Tests whether the iterator is empty.

Note: The default implementation creates and discards an iterator.

Note: Implementations in subclasses that are not repeatedly iterable must take care not to consume any elements whenisEmpty is called.

Attributes

Returns: true if the iterator contains no elements,false otherwise.
Definition Classes: Iterator ->IterableOnceOps
Inherited from:: Iterator
Source: Iterator.scala

defisTraversableAgain:Boolean

Tests whether this collection can be repeatedly traversed.

Tests whether this collection can be repeatedly traversed. Always true for Iterables and false for Iterators unless overridden.

Attributes

Returns: true if it is repeatedly traversable,false otherwise.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

finaldefiterator:Iterator[Char]

Anscala.collection.Iterator over the elements of this iterator.

If anIterableOnce object is in fact anscala.collection.Iterator, this method always returns itself, in its current state, but if it is anscala.collection.Iterable, this method always returns a newscala.collection.Iterator.

Attributes

Inherited from:: Iterator
Source: Iterator.scala

defknownSize:Int

The number of elements in this collection, if it can be cheaply computed, -1 otherwise.

The number of elements in this collection, if it can be cheaply computed, -1 otherwise. Cheaply usually means: Not requiring a collection traversal.

Attributes

Inherited from:: IterableOnce
Source: IterableOnce.scala

finaldeflength:Int

Attributes

Inherited from:: Iterator
Source: Iterator.scala

defmap[B](f:Char=>B):Iterator[B]

Builds a new iterator by applying a function to all elements of this iterator.

Type parameters

B: the element type of the returned iterator.

Value parameters

f: the function to apply to each element.

Attributes

Returns: a new iterator resulting from applying the given functionf to each element of this iterator and collecting the results.
Inherited from:: Iterator
Source: Iterator.scala

defmax[B >:Char](implicitord:Ordering[B]):Char

Finds the largest element.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The type over which the ordering is defined.

Value parameters

ord: An ordering to be used for comparing elements.

Attributes

Returns: the largest element of this collection with respect to the orderingord.
Throws: UnsupportedOperationExceptionif this collection is empty.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defmaxBy[B](f:Char=>B)(implicitord:Ordering[B]):Char

Finds the first element which yields the largest value measured by functionf.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The result type of the functionf.

Value parameters

cmp: An ordering to be used for comparing elements.
f: The measuring function.

Attributes

Returns: the first element of this collection with the largest value measured by functionf with respect to the orderingcmp.
Throws: UnsupportedOperationExceptionif this collection is empty.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defmaxByOption[B](f:Char=>B)(implicitord:Ordering[B]):Option[Char]

Finds the first element which yields the largest value measured by functionf.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The result type of the functionf.

Value parameters

cmp: An ordering to be used for comparing elements.
f: The measuring function.

Attributes

Returns: an option value containing the first element of this collection with the largest value measured by functionf with respect to the orderingcmp.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defmaxOption[B >:Char](implicitord:Ordering[B]):Option[Char]

Finds the largest element.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The type over which the ordering is defined.

Value parameters

ord: An ordering to be used for comparing elements.

Attributes

Returns: an option value containing the largest element of this collection with respect to the orderingord.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defmin[B >:Char](implicitord:Ordering[B]):Char

Finds the smallest element.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The type over which the ordering is defined.

Value parameters

ord: An ordering to be used for comparing elements.

Attributes

Returns: the smallest element of this collection with respect to the orderingord.
Throws: UnsupportedOperationExceptionif this collection is empty.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defminBy[B](f:Char=>B)(implicitord:Ordering[B]):Char

Finds the first element which yields the smallest value measured by functionf.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The result type of the functionf.

Value parameters

cmp: An ordering to be used for comparing elements.
f: The measuring function.

Attributes

Returns: the first element of this collection with the smallest value measured by functionf with respect to the orderingcmp.
Throws: UnsupportedOperationExceptionif this collection is empty.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defminByOption[B](f:Char=>B)(implicitord:Ordering[B]):Option[Char]

Finds the first element which yields the smallest value measured by functionf.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The result type of the functionf.

Value parameters

cmp: An ordering to be used for comparing elements.
f: The measuring function.

Attributes

Returns: an option value containing the first element of this collection with the smallest value measured by functionf with respect to the orderingcmp.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defminOption[B >:Char](implicitord:Ordering[B]):Option[Char]

Finds the smallest element.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The type over which the ordering is defined.

Value parameters

ord: An ordering to be used for comparing elements.

Attributes

Returns: an option value containing the smallest element of this collection with respect to the orderingord.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

finaldefmkString:String

Displays all elements of this collection in a string.

Delegates to addString, which can be overridden.

Attributes

Returns: a string representation of this collection. In the resulting string the string representations (w.r.t. the methodtoString) of all elements of this collection follow each other without any separator string.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

finaldefmkString(sep:String):String

Displays all elements of this collection in a string using a separator string.

Delegates to addString, which can be overridden.

Value parameters

sep: the separator string.

Attributes

Returns: a string representation of this collection. In the resulting string the string representations (w.r.t. the methodtoString) of all elements of this collection are separated by the stringsep.
Example: List(1, 2, 3).mkString("|") = "1|2|3"
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

finaldefmkString(start:String,sep:String,end:String):String

Displays all elements of this collection in a string using start, end, and separator strings.

Delegates to addString, which can be overridden.

Value parameters

end: the ending string.
sep: the separator string.
start: the starting string.

Attributes

Returns: a string representation of this collection. The resulting string begins with the stringstart and ends with the stringend. Inside, the string representations (w.r.t. the methodtoString) of all elements of this collection are separated by the stringsep.
Example: List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defnextOption():Option[Char]

Wraps the value ofnext() in an option.

Attributes

Returns: Some(next) if a next element exists,None otherwise.
Inherited from:: Iterator
Source: Iterator.scala

defnonEmpty:Boolean

Tests whether the collection is not empty.

Attributes

Returns: true if the collection contains at least one element,false otherwise.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defpadTo[B >:Char](len:Int,elem:B):Iterator[B]

A copy of this iterator with an element value appended until a given target length is reached.

Type parameters

B: the element type of the returned iterator.

Value parameters

elem: the padding value
len: the target length

Attributes

Returns: a new iterator consisting of all elements of this iterator followed by the minimal number of occurrences ofelem so that the resulting collection has a length of at leastlen.
Inherited from:: Iterator
Source: Iterator.scala

defpartition(p:Char=>Boolean): (Iterator[Char],Iterator[Char])

Partitions this iterator in two iterators according to a predicate.

Value parameters

p: the predicate on which to partition

Attributes

Returns: a pair of iterators: the iterator that satisfies the predicatep and the iterator that does not. The relative order of the elements in the resulting iterators is the same as in the original iterator.
Note: Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterators that were returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterators as well.
Inherited from:: Iterator
Source: Iterator.scala

defpatch[B >:Char](from:Int,patchElems:Iterator[B],replaced:Int):Iterator[B]

Returns this iterator with patched values.

Returns this iterator with patched values. Patching at negative indices is the same as patching starting at 0. Patching at indices at or larger than the length of the original iterator appends the patch to the end. If more values are replaced than actually exist, the excess is ignored.

Value parameters

from: The start index from which to patch
patchElems: The iterator of patch values
replaced: The number of values in the original iterator that are replaced by the patch.

Attributes

Note: Reuse: After calling this method, one should discard the iterator it was called on, as well as the one passed as a parameter, and use only the iterator that was returned. Using the old iterators is undefined, subject to change, and may result in changes to the new iterator as well.
Inherited from:: Iterator
Source: Iterator.scala

defproduct[B >:Char](implicitnum:Numeric[B]):B

Multiplies together the elements of this collection.

The default implementation usesreduce for a known non-empty collection,foldLeft otherwise.

Note: will not terminate for infinite-sized collections.

Type parameters

B: the result type of the* operator.

Value parameters

num: an implicit parameter defining a set of numeric operations which includes the* operator to be used in forming the product.

Attributes

Returns: the product of all elements of this collection with respect to the* operator innum.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defreduce[B >:Char](op: (B,B)=>B):B

Applies the given binary operatorop to all elements of this collection.

For each application of the operator, each operand is either an element of this collection or another such application of the operator. The order of applications of the operator is unspecified and may be nondeterministic. Each element appears exactly once in the computation.

If this collection is ordered, then for any application of the operator, the element(s) appearing in the left operand will precede those in the right.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The type parameter for the binary operator, a supertype ofA.

Value parameters

op: A binary operator; must be associative for the result to always be the same across runs.

Attributes

Returns: The result of applyingop between all the elements if the collection is nonempty.
Throws: UnsupportedOperationExceptionif this collection is empty.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defreduceLeft[B >:Char](op: (B,Char)=>B):B

Applies the given binary operatorop to all elements of this collection, going left to right.

"Going left to right" only makes sense if this collection is ordered: then ifx1,x2, ...,xn are the elements of this collection, the result isop( op( op( ... op(x1, x2) ... ), xn-1), xn).

If this collection is not ordered, then for each application of the operator, each right operand is an element. In addition, the leftmost operand is the first element of this collection and each other left operand is itself an application of the operator. Each element appears exactly once in the computation.

Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The result type of the binary operator, a supertype ofA.

Value parameters

op: A binary operator.

Attributes

Returns: The result of applyingop to all elements of this collection, going left to right.
Throws: UnsupportedOperationExceptionif this collection is empty.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defreduceLeftOption[B >:Char](op: (B,Char)=>B):Option[B]

If this collection is nonempty, reduces it with the given binary operatorop, going left to right.

The behavior is the same asreduceLeft except that the value isNone if the collection is empty. Each element appears exactly once in the computation.

Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The result type of the binary operator, a supertype ofA.

Value parameters

op: A binary operator.

Attributes

Returns: The result of reducing this collection withop going left to right if the collection is nonempty, inside aSome, andNone otherwise.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defreduceOption[B >:Char](op: (B,B)=>B):Option[B]

If this collection is nonempty, reduces it with the given binary operatorop.

The behavior is the same asreduce except that the value isNone if the collection is empty. The order of applications of the operator is unspecified and may be nondeterministic. Each element appears exactly once in the computation.

Note: will not terminate for infinite-sized collections.

Type parameters

B: A type parameter for the binary operator, a supertype ofA.

Value parameters

op: A binary operator; must be associative for the result to always be the same across runs.

Attributes

Returns: The result of reducing this collection withop if the collection is nonempty, inside aSome, andNone otherwise.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defreduceRight[B >:Char](op: (Char,B)=>B):B

Applies the given binary operatorop to all elements of this collection, going right to left.

"Going right to left" only makes sense if this collection is ordered: then ifx1,x2, ...,xn are the elements of this collection, the result isop(x1, op(x2, op( ... op(xn-1, xn) ... ))).

If this collection is not ordered, then for each application of the operator, each left operand is an element. In addition, the rightmost operand is the last element of this collection and each other right operand is itself an application of the operator. Each element appears exactly once in the computation.

Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The result type of the binary operator, a supertype ofA.

Value parameters

op: A binary operator.

Attributes

Returns: The result of applyingop to all elements of this collection, going right to left.
Throws: UnsupportedOperationExceptionif this collection is empty.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defreduceRightOption[B >:Char](op: (Char,B)=>B):Option[B]

If this collection is nonempty, reduces it with the given binary operatorop, going right to left.

The behavior is the same asreduceRight except that the value isNone if the collection is empty. Each element appears exactly once in the computation.

Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

Note: will not terminate for infinite-sized collections.

Type parameters

B: The result type of the binary operator, a supertype ofA.

Value parameters

op: A binary operator.

Attributes

Returns: The result of reducing this collection withop going right to left if the collection is nonempty, inside aSome, andNone otherwise.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

protecteddefreversed:Iterable[Char]

Attributes

Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defsameElements[B >:Char](that:IterableOnce[B]):Boolean

Checks whether corresponding elements of the given iterable collection compare equal (with respect to==) to elements of this iterator.

Type parameters

B: the type of the elements of collectionthat.

Value parameters

that: the collection to compare

Attributes

Returns: true if both collections contain equal elements in the same order,false otherwise. <invalid inheritdoc annotation>
Inherited from:: Iterator
Source: Iterator.scala

defscanLeft[B](z:B)(op: (B,Char)=>B):Iterator[B]

Produces a iterator containing cumulative results of applying the operator going left to right, including the initial value.

Note: will not terminate for infinite-sized collections.

Note: might return different results for different runs, unless the underlying collection type is ordered.

Type parameters

B: the type of the elements in the resulting collection

Value parameters

op: the binary operator applied to the intermediate result and the element
z: the initial value

Attributes

Returns: collection with intermediate results
Inherited from:: Iterator
Source: Iterator.scala

defsize:Int

The size of this collection.

Note: will not terminate for infinite-sized collections.

Attributes

Returns: the number of elements in this collection.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defslice(from:Int,until:Int):Iterator[Char]

Selects an interval of elements.

Selects an interval of elements. The returned iterator is made up of all elementsx which satisfy the invariant:

from <= indexOf(x) < until

Note: might return different results for different runs, unless the underlying collection type is ordered.

Value parameters

from: the lowest index to include from this iterator.
until: the lowest index to EXCLUDE from this iterator.

Attributes

Returns: a iterator containing the elements greater than or equal to indexfrom extending up to (but not including) indexuntil of this iterator.
Inherited from:: Iterator
Source: Iterator.scala

defsliding[B >:Char](size:Int,step:Int = ...):GroupedIterator[B]

Returns an iterator which presents a "sliding window" view of this iterator.

Returns an iterator which presents a "sliding window" view of this iterator. The first argument is the window size, and the second argumentstep is how far to advance the window on each iteration. Thestep defaults to1.

The returnedGroupedIterator can be configured to either pad a partial result to sizesize or suppress the partial result entirely.

Example usages:

// Returns List(ArraySeq(1, 2, 3), ArraySeq(2, 3, 4), ArraySeq(3, 4, 5))(1 to 5).iterator.sliding(3).toList// Returns List(ArraySeq(1, 2, 3, 4), ArraySeq(4, 5))(1 to 5).iterator.sliding(4, 3).toList// Returns List(ArraySeq(1, 2, 3, 4))(1 to 5).iterator.sliding(4, 3).withPartial(false).toList// Returns List(ArraySeq(1, 2, 3, 4), ArraySeq(4, 5, 20, 25))// Illustrating that withPadding's argument is by-name.val it2 = Iterator.iterate(20)(_ + 5)(1 to 5).iterator.sliding(4, 3).withPadding(it2.next).toList

Value parameters

size: the number of elements per group
step: the distance between the first elements of successive groups

Attributes

Returns: AGroupedIterator producingSeq[B]s of sizesize, except the last element (which may be the only element) will be truncated if there are fewer thansize elements remaining to be grouped. This behavior can be configured.
Note: Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
Inherited from:: Iterator
Source: Iterator.scala

defspan(p:Char=>Boolean): (Iterator[Char],Iterator[Char])

Splits this iterator into a prefix/suffix pair according to a predicate.

Note:c span p is equivalent to (but possibly more efficient than)(c takeWhile p, c dropWhile p), provided the evaluation of the predicatep does not cause any side-effects.

Note: might return different results for different runs, unless the underlying collection type is ordered.

Attributes

Note: Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterators that were returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterators as well.
Inherited from:: Iterator
Source: Iterator.scala

defsplitAt(n:Int): (Iterator[Char],Iterator[Char])

Splits this collection into a prefix/suffix pair at a given position.

Note:c splitAt n is equivalent to (but possibly more efficient than)(c take n, c drop n).

Note: might return different results for different runs, unless the underlying collection type is ordered.

Value parameters

n: the position at which to split.

Attributes

Returns: a pair of collections consisting of the firstn elements of this collection, and the other elements.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defstepper[S <:Stepper[_]](implicitshape:StepperShape[Char,S]):S

Returns ascala.collection.Stepper for the elements of this collection.

The Stepper enables creating a Java stream to operate on the collection, seescala.jdk.StreamConverters. For collections holding primitive values, the Stepper can be used as an iterator which doesn't box the elements.

The implicitscala.collection.StepperShape parameter defines the resulting Stepper type according to the element type of this collection.

For collections ofInt,Short,Byte orChar, anscala.collection.IntStepper is returned
For collections ofDouble orFloat, ascala.collection.DoubleStepper is returned
For collections ofLong ascala.collection.LongStepper is returned
For any other element type, anscala.collection.AnyStepper is returned

Note that this method is overridden in subclasses and the return type is refined toS with EfficientSplit, for examplescala.collection.IndexedSeqOps.stepper. For Steppers marked withscala.collection.Stepper.EfficientSplit, the converters inscala.jdk.StreamConverters allow creating parallel streams, whereas bare Steppers can be converted only to sequential streams.

Attributes

Inherited from:: IterableOnce
Source: IterableOnce.scala

defsum[B >:Char](implicitnum:Numeric[B]):B

Sums the elements of this collection.

The default implementation usesreduce for a known non-empty collection,foldLeft otherwise.

Note: will not terminate for infinite-sized collections.

Type parameters

B: the result type of the+ operator.

Value parameters

num: an implicit parameter defining a set of numeric operations which includes the+ operator to be used in forming the sum.

Attributes

Returns: the sum of all elements of this collection with respect to the+ operator innum.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

deftake(n:Int):Iterator[Char]

Selects the firstn elements.

Note: might return different results for different runs, unless the underlying collection type is ordered.

Value parameters

n: the number of elements to take from this iterator.

Attributes

Returns: a iterator consisting only of the firstn elements of this iterator, or else the whole iterator, if it has less thann elements. Ifn is negative, returns an empty iterator.
Inherited from:: Iterator
Source: Iterator.scala

deftakeWhile(p:Char=>Boolean):Iterator[Char]

Selects the longest prefix of elements that satisfy a predicate.

The matching prefix starts with the first element of this iterator, and the element following the prefix is the first element that does not satisfy the predicate. The matching prefix may empty, so that this method returns an empty iterator.

Example:

scala> List(1, 2, 3, 100, 4).takeWhile(n => n < 10)val res0: List[Int] = List(1, 2, 3)scala> List(1, 2, 3, 100, 4).takeWhile(n => n == 0)val res1: List[Int] = List()

Usespan to obtain both the prefix and suffix. Usefilter to retain only those elements from the entire iterator that satisfy the predicate.

Note: might return different results for different runs, unless the underlying collection type is ordered.

Value parameters

p: The predicate used to test elements.

Attributes

Returns: the longest prefix of this iterator whose elements all satisfy the predicatep.
Inherited from:: Iterator
Source: Iterator.scala

overridedeftapEach[U](f:Char=>U):Iterator[Char]

Applies a side-effecting function to each element in this collection.

Applies a side-effecting function to each element in this collection. Strict collections will applyf to their elements immediately, while lazy collections like Views and LazyLists will only applyf on each element if and when that element is evaluated, and each time that element is evaluated.

Type parameters

U: the return type of f

Value parameters

f: a function to apply to each element in this iterator

Attributes

Returns: The same logical collection as this
Definition Classes: Iterator ->IterableOnceOps
Inherited from:: Iterator
Source: Iterator.scala

defto[C1](factory:Factory[Char,C1]):C1

Given a collection factoryfactory, converts this collection to the appropriate representation for the current element typeA.

Given a collection factoryfactory, converts this collection to the appropriate representation for the current element typeA. Example uses:

xs.to(List)xs.to(ArrayBuffer)xs.to(BitSet) // for xs: Iterable[Int]

Attributes

Inherited from:: IterableOnceOps
Source: IterableOnce.scala

deftoArray[B >:Char :ClassTag]:Array[B]

Converts this collection to anArray.

Implementation note: DO NOT callArray.from from this method.

Type parameters

B: The type of elements of the result, a supertype ofA.

Attributes

Returns: This collection as anArray[B].
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

finaldeftoBuffer[B >:Char]:Buffer[B]

Converts this collection to aBuffer.

Type parameters

B: The type of elements of the result, a supertype ofA.

Attributes

Returns: This collection as aBuffer[B].
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

deftoIndexedSeq:IndexedSeq[Char]

Converts this collection to anIndexedSeq.

Attributes

Returns: This collection as anIndexedSeq[A].
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

deftoList:List[Char]

Converts this collection to aList.

Attributes

Returns: This collection as aList[A].
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

deftoMap[K,V](implicitev:Char <:< (K,V)):Map[K,V]

Converts this collection to aMap, given an implicit coercion from the collection's type to a key-value tuple.

Type parameters

K: The key type for the resulting map.
V: The value type for the resulting map.

Value parameters

ev: An implicit coercion fromA to[K, V].

Attributes

Returns: This collection as aMap[K, V].
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

deftoSeq:Seq[Char]

Attributes

Returns: This collection as aSeq[A]. This is equivalent toto(Seq) but might be faster.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

deftoSet[B >:Char]:Set[B]

Converts this collection to aSet.

Type parameters

B: The type of elements of the result, a supertype ofA.

Attributes

Returns: This collection as aSet[B].
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

overridedeftoString:String

Converts this iterator to a string.

Attributes

Returns: "<iterator>"
Note: Reuse: The iterator remains valid for further use whatever result is returned.
Definition Classes: Iterator ->Any
Inherited from:: Iterator
Source: Iterator.scala

deftoVector:Vector[Char]

Converts this collection to aVector.

Attributes

Returns: This collection as aVector[A].
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defwithFilter(p:Char=>Boolean):Iterator[Char]

Creates an iterator over all the elements of this iterator that satisfy the predicatep.

Creates an iterator over all the elements of this iterator that satisfy the predicatep. The order of the elements is preserved.

Note:withFilter is the same asfilter on iterators. It exists so that for-expressions with filters work over iterators.

Value parameters

p: the predicate used to test values.

Attributes

Returns: an iterator which produces those values of this iterator which satisfy the predicatep.
Note: Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
Inherited from:: Iterator
Source: Iterator.scala

defzip[B](that:IterableOnce[B]):Iterator[(Char,B)]

Attributes

Inherited from:: Iterator
Source: Iterator.scala

defzipAll[A1 >:Char,B](that:IterableOnce[B],thisElem:A1,thatElem:B):Iterator[(A1,B)]

Attributes

Inherited from:: Iterator
Source: Iterator.scala

defzipWithIndex:Iterator[(Char,Int)]

Zips this iterator with its indices.

Attributes

Returns: A new iterator containing pairs consisting of all elements of this iterator paired with their index. Indices start at0.
Example: List("a", "b", "c").zipWithIndex == List(("a", 0), ("b", 1), ("c", 2))
Inherited from:: Iterator
Source: Iterator.scala

Deprecated and Inherited methods

finaldef/:[B](z:B)(op: (B,Char)=>B):B

Attributes

Deprecated: [Since version 2.13.0]Use foldLeft instead of /:
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

finaldef:\[B](z:B)(op: (Char,B)=>B):B

Attributes

Deprecated: [Since version 2.13.0]Use foldRight instead of :\\
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

defaggregate[B](z:=>B)(seqop: (B,Char)=>B,combop: (B,B)=>B):B

Aggregates the results of applying an operator to subsequent elements.

Since this method degenerates tofoldLeft for sequential (non-parallel) collections, where the combining operation is ignored, it is advisable to preferfoldLeft for that case.

Forparallel collections, use theaggregate method specified byscala.collection.parallel.ParIterableLike.

Type parameters

B: the result type, produced byseqop,combop, and by this function as a final result.

Value parameters

combop: an associative operator for combining sequential results, unused for sequential collections.
seqop: the binary operator used to accumulate the result.
z: the start value, a neutral element forseqop.

Attributes

Deprecated: [Since version 2.13.0]For sequential collections, prefer `foldLeft(z)(seqop)`. For parallel collections, use `ParIterableLike#aggregate`.
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

finaldefcopyToBuffer[B >:Char](dest:Buffer[B]):Unit

Attributes

Deprecated: [Since version 2.13.0]Use `dest ++= coll` instead
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

final overridedefhasDefiniteSize:Boolean

Tests whether this iterator is known to have a finite size.

Tests whether this iterator is known to have a finite size. All strict collections are known to have finite size. For a non-strict collection such asStream, the predicate returnstrue if all elements have been computed. It returnsfalse if the stream is not yet evaluated to the end. Non-empty Iterators usually returnfalse even if they were created from a collection with a known finite size.

Note: many collection methods will not work on collections of infinite sizes. The typical failure mode is an infinite loop. These methods always attempt a traversal without checking first thathasDefiniteSize returnstrue. However, checkinghasDefiniteSize can provide an assurance that size is well-defined and non-termination is not a concern.

Attributes

Returns: true if this collection is known to have finite size,false otherwise.
See also: methodknownSize for a more useful alternative
Deprecated: [Since version 2.13.0]hasDefiniteSize on Iterator is the same as isEmpty
This method is deprecated in 2.13 because it does not provide any actionable information. As noted above, even the collection library itself does not use it. When there is no guarantee that a collection is finite, it is generally best to attempt a computation anyway and document that it will not terminate for infinite collections rather than backing out because this would prevent performing the computation on collections that are in fact finite even thoughhasDefiniteSize returnsfalse.
Definition Classes: Iterator ->IterableOnceOps
Inherited from:: Iterator
Source: Iterator.scala

defscanRight[B](z:B)(op: (Char,B)=>B):Iterator[B]

Attributes

Deprecated: [Since version 2.13.0]Call scanRight on an Iterable instead.
Inherited from:: Iterator
Source: Iterator.scala

defseq:this.type

Attributes

Deprecated: [Since version 2.13.0]Iterator.seq always returns the iterator itself
Inherited from:: Iterator
Source: Iterator.scala

finaldeftoIterator:Iterator[Char]

Attributes

Deprecated: [Since version 2.13.0]Use .iterator instead of .toIterator
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

finaldeftoStream:Stream[Char]

Attributes

Deprecated: [Since version 2.13.0]Use .to(LazyList) instead of .toStream
Inherited from:: IterableOnceOps
Source: IterableOnce.scala

Concrete fields

vardescr:String

description of this source, default empty

Attributes

Source: Source.scala

varnerrors:Int

Attributes

Source: Source.scala

varnwarnings:Int

Attributes

Source: Source.scala

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